1249741782 has 12 divisors (see below), whose sum is σ = 2707773900. Its totient is φ = 416580588.

The previous prime is 1249741771. The next prime is 1249741807. The reversal of 1249741782 is 2871479421.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34715032 + ... + 34715067.

It is an arithmetic number, because the mean of its divisors is an integer number (225647825).

Almost surely, 2^1249741782 is an apocalyptic number.

1249741782 is an abundant number, since it is smaller than the sum of its proper divisors (1458032118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249741782 is a wasteful number, since it uses less digits than its factorization.

1249741782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69430107 (or 69430104 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1249741782 is about 35351.6871167417. The cubic root of 1249741782 is about 1077.1431647322.

It can be divided in two parts, 124974 and 1782, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 1249741782 in words is "one billion, two hundred forty-nine million, seven hundred forty-one thousand, seven hundred eighty-two".